"All the options are a trap" would imply that the Crucible didn't do anything, and all of the work from the previous cycles and all of the work in the existing cycle to finish it was entirely pointless and was never going to do anything at all.

Yes, you have to accept that the super weapon you've spent so much time and energy on making sure it got completed actually did something and wasn't just some elaborate plot by the Reapers. Either way though, it isn't like you've got a better choice. Without the Crucible the Reapers win no matter what and the point at which they could "indoctrinate" Shepard and have it mean anything is long gone. The races have already lost by the end of the 3rd game, they might not be finished with the clean-up any time soon, but without the effects of the Crucible the rest of the galactic civilizations might be lucky to take out a couple more Reapers at most before they're finished off.

And yes, "control has a very high chance of going wrong" is pretty much the point and why I say it is the Renegade option, because most of the other Renegade options throughout the game leave situations messy and not really controlled and resulted in potentially a lot of people dying as racial conflicts flare up again. It is ending the current conflict but not really fixing or changing anything long term, it is the "now is more important than the future" option. It's very parallel to the genophage.